Thanks for contacting with us. Right now, we forgot to give the option for Loading Icon Change. If you’ve your own Icon then We will make this option for you.
For the Menu, we need your FTP access and WordPress Admin Access to remove this option. But one thing, If you upgrade the Theme next time then the Menu will appear again. Also, we can create another option for you to show/hide sidebar Menu.
Send your credentials on Private, we will solve your issues. Don’t worry.